Sergey Brin Wearing Google Glass

Google recently showed off its Google Glass headset at this year's South by Southwest technology festival in Austin, Tex., providing entrepreneurs and journalists with the opportunity to test the company's much-discussed augmented-reality glasses for the first time. While devices such as Glass are cool and futuristic-looking in a conference setting, their reception in the real world isn't necessarily positive. Google founder Sergey Brin was photographed sporting a pair on the New York subway in January, but other public displays of Glass haven't been met as warmly, so much so that a Seattle bar has banned patrons from wearing Glass under penalty of "ass kickings." Here, a look at 11 specimens of wearable technology.